Struggling with B12 injection frequency? Here's what you need to know If you have Pernicious Anaemia (PA) or B12 deficiency due to autoimmune gastritis, NHS guidance is clear: You should B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics B12 Shots Do You Need a Prescription? A Complete Guide Carter's Walk In + Urgent Care Are B12 Shots Safe? Royal Palm Beach Medical Group Vitamin B12 Side Effects If you've been feeling run down lately you could be deficient in Vitamin B12. Physical symptoms of B12 deficiency include mouth ulcers, fatigue, digestive issues and muscle aches. There are also neurological